CN102875109B - Modified perlite heat-insulation board and manufacturing method thereof - Google Patents
Modified perlite heat-insulation board and manufacturing method thereof Download PDFInfo
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- CN102875109B CN102875109B CN 201210401356 CN201210401356A CN102875109B CN 102875109 B CN102875109 B CN 102875109B CN 201210401356 CN201210401356 CN 201210401356 CN 201210401356 A CN201210401356 A CN 201210401356A CN 102875109 B CN102875109 B CN 102875109B
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Abstract
The invention relates to novel building outer-wall heat-insulation materials, in particular to a modified perlite heat-insulation board and a manufacturing method thereof. The modified perlite heat-insulation board is manufactured by, by weight, 1-3 parts of silica powder, 3-6 parts of silica sol, 0.5-1.5 parts of filming auxiliaries, 55-70 parts of water glass, 4-6 parts of water repellent, 80 parts of expanded perlite and 1-2 parts of curing agent. In the modified perlite heat-insulation board, the silica sol and the modified perlite are used as heat-insulation functional aggregate, the water glass is used as binder, so that the heat-insulation board has the advantages of good heat insulation, pressure and bending resistance and water repelling and the like. The manufacturing method of the modified perlite heat-insulation board includes mixing and stirring in turn, drying, and mixing again, so that the modified perlite heat-insulation board is good in heat insulation performance, highly waterproof, excellent in mechanical performance, fireproof and fine in flame retardance.
Description
Technical field
The present invention relates to the novel building external-wall heat-insulation material, particularly a kind of modification pearlite heat-insulation plate and preparation method thereof.
Background technology
Along with fast development of national economy, improving constantly of living standards of the people, also increasing to the consumption of the energy, in the total energy consumption of China, building energy consumption is one of main aspect of China's energy consumption.According to relevant report, most of in the annual newly-increased building construction area of China is the highly energy-consuming building, and existing building nearly 90% is that high energy consumption is built.Buildings annual power consumption in the whole nation accounts for more than 20% of China's generated energy, and unit floor area of building power consumption is the several times of developed country.Wherein major cause is that fall behind relative with correlation technique of China's building heat preservation function imperfection caused.
For energy-saving and emission-reduction, reduce building energy consumption, the most general method is to install the heat insulating layer additional at exterior wall at present.What existing lagging material adopted mostly is the low density loose porous material, because the air of inner filling and sealing plays very big barrier effect to convection current and the conduction of heat, thereby realizes the effect of heat insulating.
What China present stage used mainly is organic insulation material, as: polystyrene block EPS, extruded polystyrene board XPS, granular polystyrene, spraying polyurethane SPU and polyurethane PU hard bubble etc.That organic insulation material has is in light weight, the characteristics of good effect of heat insulation, easy construction.But existing organic insulation material also has its unavoidable shortcoming: inflammable, though the fire resistance that existing relevant art improves organic materials reaches flame retardant effect, yet under the bigger situation of the intensity of a fire, the fire-retardant finish material still can be lighted, some material also may produce a large amount of toxic smog, and the escape personnel dies like a rat or damped possibility when increasing the fire generation.The rapid reduction of mechanical property also may increase the risk that it comes off after organic materials was heated in fire in addition, caused unnecessary loss.And inorganic heat insulation material is the A1 level with regard to not having such shortcoming, its fire resistance rating, does not burn, is not fuming and Heat stability is good, also can not lose intensity because of high temperature.
Therefore, from overall situation and the people life property safety of building energy conservation, substituting organic insulation material with outstanding inorganic heat insulation material becomes extremely urgent problem.
Inorganic heat insulation material is based on rock wool, pearlstone, they have acid and alkali-resistance, corrosion-resistant, stability height, easy construction, applied widely, be applicable to the insulation of the complicated body of wall of various body of wall basic unit's materials and different shape, the most important thing is that its fire protection flame retarding security is good, can be widely used in intensive dwelling house, public building, large-scale public place, inflammable and explosive place etc. other to the strict place of fire-protection rating.Yet the insulation of existing inorganic heat insulation material is relative with hydrophobicity performance relatively poor, and resistance to compression, folding strength are not high, have restricted its development.
Therefore, research and develop a kind of alternative organic insulation material and density is low, intensity is high, water resistance the is good lagging material that do not fire and become the current practical problems of needing solution badly.
Summary of the invention
Technical problem to be solved by this invention provides a kind of fire protection flame retarding, bending and compressive strength height, hydrophobic is effective, heat-insulating property is excellent modification pearlite heat-insulation plate and preparation method thereof.
Modification pearlite heat-insulation plate of the present invention, made by the raw material of following parts by weight:
The preferred benzene emulsion of described film coalescence aid.
The modulus of described water glass is preferred more than 3.0.
The preferred organosilicon moisture repellent of described hydrophober, the most preferable water glass.
The preferred unit weight of described pearlstone is 80-105kg/m
3, the normal temperature thermal conductivity is 0.03-0.04w/m.k.
Described solidifying agent preferably phosphoric acid silicon.
The preparation method of described modification pearlite heat-insulation plate may further comprise the steps:
(1) in the mortar mixing agitator, adds 80 parts of perlites, and add 1-3 part silicon powder; Obtain silicon powder modified expanded perlite mixture;
(2) in dispersion machine, add 3-6 part silicon sol and 0.5-1.5 part film coalescence aid respectively, under the 350-450rpm rotating speed, stir 5～10min, obtain the silicon sol mixture;
(3) under whipped state, with atomizer in step (1) the gained mixture with vaporific continuous injection step (2) gained silicon sol mixture, mix under the 100-200rpm rotating speed and stir 10-30min, seasoning 4-6h is stand-by then;
(4) under agitator 300-500rpm rotating speed, in the water glass of 55-70 part, add 1-2 part solidifying agent, stir 10-20min;
(5) step (4) gained material is ejected in the dried material of mortar mixing agitator, under the 150-250rpm rotating speed, mixes;
(6) rapid vaporific adding 4-6 part organosilicon moisture repellent in the described mortar mixing agitator, after mix stirring 15-30min under the 150-250rpm rotating speed, inject fixed mould and pat, be pressed into plate with hydropress by pressure ratio 1.8-2.2:1 then, described plate is placed 140-160 ℃ of oven dry 3-5h down, cooling back packing warehouse-in.
In the preparation of modification pearlite heat-insulation plate, according to the corresponding formulation parameter of prescription and flow process, add mode, pressure ratio, storing temperature, storing time and priority mixing and addition sequence etc. as churning time, time of drying, material, all in the excellent properties of the finished product, brought into play indispensable effect.When above-mentioned each parameter and flow process form a complete preparation system and cooperate prescription of the present invention, just can make performance modification pearlite heat-insulation plate up to standard.
Among the preparation technology of the present invention, have following characteristics:
1, the silicon powder gross blow hole defective of having filled pearlstone when powdery adds perlite provides good condition for the adding of next step silicon sol, the spilehole of easier formation sealing, thus reach the purpose of organizing airiness to improve heat insulation effect.
2, the silicon sol mixed solution can not allow the silicon sol major part be penetrated into pearlstone inside in the mode that spraying adds, and is more conducive to the even distribution of silicon sol, reaches good film-formation result.Water glass then and hydrophober play the effect of parcel and hydrophobic again, protect structure not to be damaged effectively.
3, mix earlier the hydrophobic mechanism that the mode that adds hydrophober behind the water glass can take full advantage of hydrophober, reach the purpose of saving, can improve intensity and reduce water-intake rate simultaneously.
Compared with prior art, beneficial effect of the present invention is as follows:
Modification pearlite heat-insulation plate of the present invention is the heat insulation function aggregate with silica sol modified perlite, water glass is tackiness agent, make warming plate of the present invention have excellent insulation, resistance to compression, anti-folding, excellent specific properties such as hydrophobic, prepared pearlite heat-insulation plate has the incomparable A1 fire-protection rating standard of organic insulation material, has the excellent properties that existing inorganic heat preservation plate is difficult to reach again, thermal conductivity≤the 0.051w/m.k of warming plate of the present invention, ultimate compression strength 〉=0.58MPa, folding strength 〉=0.38MPa, water-intake rate≤3%, and density is even, less than 225kg/m
3Its waterproof, insulation index are close to organic insulation material.
The preparation method of modification pearlite heat-insulation plate of the present invention, make the modification pearlite heat-insulation plate by batch mixing stirring, drying, decomposite technology, thereby realized pearlite heat-insulation plate good heat insulating, height waterproof, mechanical property excellence and the good purpose of fire retardant performance.Warming plate of the present invention is easy for installation, is fit to the building exterior wall heat preserving system, can satisfy the user demand of existing roofing, metope heat-insulation system.
Embodiment
Be described further below in conjunction with the present invention of embodiment.
Raw material is as follows among the embodiment: film coalescence aid is benzene emulsion; The modulus of water glass is 3.2, and Baume concentration is 42; Hydrophober is sodium methyl silicate; Pearlstone unit weight is 85kg/m
3, the normal temperature thermal conductivity is 0.03-0.04w/m.k; Solidifying agent is phosphoric acid silicon.
Embodiment 1
(1) in the mortar mixing agitator, adds 80 parts of perlites, and add 2 parts of silicon powders, be labeled as a.
(2) in dispersion machine, add 4 parts of silicon sol and 1 part of film coalescence aid respectively, under the 400rpm rotating speed, stir 5min and be labeled as b;
(3) under the 100rpm whipped state,, mix under the 150rpm rotating speed and stir 20min with atomized spray b mixed solution with a of atomizer in the mortar mixing agitator, seasoning 4h under the slow speed of revolution then (50rpm) state gets c.
(4) add 1 part of solidifying agent to having in 60 parts the dispersion machine of water glass under the 400rpm rotating speed, be ejected among the dried material c of mortar mixing agitator after stirring 20min, 200rpm mixes, and gets d.
(5) in the d of described mortar mixing agitator rapidly with 5 parts of organosilicon moisture repellents of vaporific adding, mix under the 200rmp rotating speed and inject fixed mould and be pressed into plate 1. with hydropress by pressure ratio 2.0 after stirring 15min.
(6) 1. place 160 ℃ constant temperature oven to toast 3h described plate, the cooling back is to be measured.
Embodiment 2
(1) in the mortar mixing agitator, adds 80 parts of perlites, and add 1.5 parts of silicon powders, be labeled as a.
(2) in dispersion machine, add 6 parts of silicon sol and 1.5 parts of film coalescence aid respectively, under the 500rpm rotating speed, stir 8min and be labeled as b;
(3) under the 100rpm whipped state,, mix under the 200rpm rotating speed and stir 15min with atomized spray b mixed solution with a of atomizer in the mortar mixing agitator, seasoning 4h under the slow speed of revolution then (50rpm) state gets c.
(4) add 2 parts of solidifying agent to the dispersion machine that 70 parts water glass is arranged under the 350rpm rotating speed, be ejected among the dried material c of mortar mixing agitator behind the stirring 10min, 200rpm mixes, and gets d.
(5) in the d of described mortar mixing agitator rapidly with 4 parts of organosilicon moisture repellents of vaporific adding, mix under the 200rmp rotating speed and inject fixed mould and be pressed into plate 2. with hydropress by pressure ratio 1.8 after stirring 20min.
(6) 2. place 160 ℃ constant temperature oven to toast 3h described plate, the cooling back is to be measured.
Embodiment 3
(1) in the mortar mixing agitator, adds 80 parts of perlites, and add 1 part of silicon powder, be labeled as a.
(2) in dispersion machine, add 3 parts of silicon sol and 0.5 part of film coalescence aid respectively, under the 400rpm rotating speed, stir 10min and be labeled as b;
(3) under the 100rpm whipped state,, mix under the 100rpm rotating speed and stir 30min with atomized spray b mixed solution with a of atomizer in the mortar mixing agitator, seasoning 4h under the slow speed of revolution then (50rpm) state gets c.
(4) add 1.5 parts of solidifying agent to having in 55 parts the dispersion machine of water glass under the 500rpm rotating speed, be ejected among the dried material c of mortar mixing agitator after stirring 15min, 200rpm mixes, and gets d.
(5) in the d of described mortar mixing agitator rapidly with 6 parts of organosilicon moisture repellents of vaporific adding, mix under the 200rmp rotating speed and inject fixed mould and be pressed into plate 3. with hydropress by pressure ratio 2.2 after stirring 30min.
(6) 3. place 150 ℃ constant temperature oven to toast 4h described plate, the cooling back is to be measured.
The warming plate of embodiment 1-3 preparation is detected, and every index is as shown in table 1:
Table 1 embodiment warming plate index table
Data from last table adopt prescription and the preparation method of warming plate of the present invention as can be seen, can make thermal conductivity≤0.051w/m.k, and water-intake rate is less than 3%, ultimate compression strength 〉=0.58MPa, folding strength 〉=0.38MPa.
Claims (8)
1. modification pearlite heat-insulation plate is characterized in that being made through following steps by the raw material of following parts by weight:
(1) 1-3 part silicon powder is joined in 80 parts of pearlstones mixes, obtain silicon powder modified expanded perlite mixture;
(2) 3-6 part silicon sol is evenly mixed with 0.5-1.5 part film coalescence aid obtain the silicon sol mixture;
(3) in step (1) gained mixture, spray into step (2) gained silicon sol mixture, seasoning 4-6h;
(4) 1-2 part solidifying agent and 55-70 part water glass are mixed;
(5) step (4) gained material is sprayed in the dried material of step (3), mix;
(6) spray into 4-6 part hydrophober in (5) gained material, injection fixed mould, compression moulding, oven dry make.
2. modification pearlite heat-insulation plate according to claim 1, it is characterized in that: described film coalescence aid is benzene emulsion.
3. modification pearlite heat-insulation plate according to claim 1, it is characterized in that: described hydrophober is organosilicon moisture repellent.
4. modification pearlite heat-insulation plate according to claim 1, it is characterized in that: described hydrophober is sodium methyl silicate.
5. modification pearlite heat-insulation plate according to claim 1, it is characterized in that: the unit weight of described pearlstone is 80-105kg/m
3, the normal temperature thermal conductivity is 0. 03～0.04w/m.k.
6. modification pearlite heat-insulation plate according to claim 1, it is characterized in that: described solidifying agent is phosphoric acid silicon.
7. modification pearlite heat-insulation plate according to claim 1 is characterized in that: the described compression moulding of step (6) is to adopt hydropress to be pressed into plate by pressure ratio 1.8-2.2:1.
8. modification pearlite heat-insulation plate according to claim 1 is characterized in that: the described bake out temperature 140-160 of step (6) ℃, and drying time 3-5h.
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| CN 201210401356 CN102875109B (en) | 2012-10-20 | 2012-10-20 | Modified perlite heat-insulation board and manufacturing method thereof |
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| CN 201210401356 CN102875109B (en) | 2012-10-20 | 2012-10-20 | Modified perlite heat-insulation board and manufacturing method thereof |
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| CN102875109B true CN102875109B (en) | 2013-10-09 |
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| CN105924122B (en) * | 2016-04-28 | 2018-04-13 | 中晶工程材料（信阳）有限公司 | The modified expanded perlite insulation board and its production method of a kind of light-weight water-proof |
| CN105948642B (en) * | 2016-04-28 | 2018-04-13 | 中晶工程材料（信阳）有限公司 | The modified expanded perlite insulation board and its production method of a kind of hydrophobic |
| CN105924103B (en) * | 2016-04-28 | 2018-04-13 | 中晶工程材料（信阳）有限公司 | A kind of modified expanded perlite insulation board and its production method |
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